feat(i18n): Enhance internationalization support for tool specifications and notifications

- Added TitleKey and DescriptionKey fields to ToolSpec for dynamic localization.
- Updated tool specifications to use i18nx for titles, descriptions, and appendices.
- Refactored notification messages to utilize i18nx for localization in conversation and ticket assignment events.
- Improved localization in the debug dialog component for skill definitions.
- Added new translation keys in English and Chinese for ticket and conversation assignment notifications.
- Ensured that fallback messages are properly localized based on user locale.

internal/ai/runtime/graphs/create_ticket_graph.go

@@ -10,6 +10,7 @@ import (
 	"agent-desk/internal/models"
 	"agent-desk/internal/pkg/dto"
 	"agent-desk/internal/pkg/dto/request"
+	"agent-desk/internal/pkg/i18nx"
 	"agent-desk/internal/services"
 
 	componenttool "github.com/cloudwego/eino/components/tool"
@@ -89,7 +90,7 @@ func (g *CreateTicketGraph) Run(ctx context.Context, argumentsInJSON string) (st
 			Handled:     true,
 			Terminal:    true,
 			Action:      "ticket_created",
-			ReplyText:   fmt.Sprintf("Ticket created. Ticket no: %s. Title: %s.", strings.TrimSpace(item.TicketNo), strings.TrimSpace(item.Title)),
+			ReplyText:   i18nx.Getf(i18nx.DefaultLocale, "graph.ticketCreated", strings.TrimSpace(item.TicketNo), strings.TrimSpace(item.Title)),
 			ShouldRetry: false,
 		}), nil
 	case ConfirmationDecisionCancel:
@@ -134,7 +135,7 @@ func (g *CreateTicketGraph) buildCreateRequest(argumentsInJSON string) (request.
 }
 
 func (g *CreateTicketGraph) buildConfirmationPrompt(req request.CreateTicketFromConversationRequest) string {
-	return fmt.Sprintf("I am ready to create a ticket for you.\nTitle: %s\nDescription: %s\nPlease reply with \"Confirm\" or \"Cancel\".",
+	return i18nx.Getf(i18nx.DefaultLocale, "graph.createTicketConfirmPrompt",
 		strings.TrimSpace(req.Title), strings.TrimSpace(req.Description))
 }
 

internal/ai/runtime/graphs/handoff_graph.go

@@ -8,6 +8,7 @@ import (
 
 	"agent-desk/internal/ai/runtime/tooling"
 	"agent-desk/internal/models"
+	"agent-desk/internal/pkg/i18nx"
 	"agent-desk/internal/pkg/tracex"
 	"agent-desk/internal/services"
 
@@ -122,7 +123,7 @@ func (g *HandoffGraph) Run(ctx context.Context, argumentsInJSON string) (string,
 }
 
 func (g *HandoffGraph) buildReason(argumentsInJSON string) (string, error) {
-	reason := "The user needs human support."
+	reason := i18nx.Get("graph.defaultHandoffReason")
 	var args handoffGraphArgs
 	if strings.TrimSpace(argumentsInJSON) != "" {
 		if err := json.Unmarshal([]byte(argumentsInJSON), &args); err != nil {
@@ -136,7 +137,7 @@ func (g *HandoffGraph) buildReason(argumentsInJSON string) (string, error) {
 }
 
 func (g *HandoffGraph) buildConfirmationPrompt(reason string) string {
-	return fmt.Sprintf("I am ready to connect you to a human support agent.\nReason: %s\nPlease reply with \"Confirm\" or \"Cancel\".", strings.TrimSpace(reason))
+	return i18nx.Getf(i18nx.DefaultLocale, "graph.handoffConfirmPrompt", strings.TrimSpace(reason))
 }
 
 func parseHandoffDecision(value string) ConfirmationDecision {

internal/ai/runtime/graphs/hitl.go

@@ -1,15 +1,22 @@
 package graphs
 
-import "strings"
+import (
+	"strings"
+
+	"agent-desk/internal/pkg/i18nx"
+)
 
 const (
 	InterruptTypeTicketCreationConfirmation = "ticket_creation_confirmation"
 	InterruptTypeHandoffConfirmation        = "handoff_confirmation"
-	ConfirmOrCancelPrompt                   = `Please reply with "Confirm" or "Cancel".`
-	NeedExplicitConfirmationPrompt          = `I need your explicit confirmation. Please reply with "Confirm" or "Cancel".`
-	ConfirmationExpiredReply                = "This confirmation has expired. Please start again."
-	CancelCreateTicketReply                 = "Ticket creation has been cancelled."
-	CancelHandoffReply                      = "Human handoff has been cancelled."
+)
+
+var (
+	ConfirmOrCancelPrompt          = i18nx.Get("graph.confirmOrCancel")
+	NeedExplicitConfirmationPrompt = i18nx.Get("graph.needExplicitConfirmation")
+	ConfirmationExpiredReply       = i18nx.Get("graph.confirmationExpired")
+	CancelCreateTicketReply        = i18nx.Get("graph.cancelCreateTicket")
+	CancelHandoffReply             = i18nx.Get("graph.cancelHandoff")
 )
 
 type ConfirmationDecision string